Search results for “natural glass”


Natural Glass | Gemstone BuzzNatural glass is formed naturally without the intervention of man. Its primary composition is silica with impurities. It (especially moldavite and snowflake obsidian) is used in carvings and beads. Natural glasses are formed under different conditions and are basically made up of varying percentages of silica.


Glass in Nature | Corning Museum of Glass — Although most people think of glass as a man-made material, it is found in many forms in the natural world. Volcanoes spew molten rock, lightning strikes desert and beach sands, meteorites pound the earth, and sea sponges and microscopic organisms inhabit the waters.


Natural Glass Value, Price, and Jewelry Information — Forms of Natural Glass used in Jewelry. Glass comes in several natural forms; all of these are all used in jewelry: Obsidian. Obsidian is the most common natural glass. It is formed by volcanism and large pieces are common. It is frequently cut into cabochons and carved.